Whenever we social scientists go about categorizing things, we always end up with a miscellaneous or "other" category. There is such a wide variety of avatars that it's impossible to neatly classify them all. The same is true of personality styles (which is the origin of the prop). Here let me briefly mention just a few other types of avatars.

Odd/shocking avatars are unusual, strange, and sometimes downright bizarre pictures - perhaps revealing people who like to surprise, goof on, or even startle and outrage others. Truly bizarre pictures might make you wonder about the person's grasp of social appropriateness, or even their mental health. Such very unusual avs are most popular among adolescents - for whom extreme behavior is a way to express independence and individuality, and to test the limits.

Abstract avatars may be used by people who enjoy enjoy symmetry, are good (non-verbal) conceptual thinkers, and/or are inclined towards visual artistic endeavors.

Billboard avatars are announcements of some sort - political, philosophical, personal. They are used by those who have something to say and are not reluctant to display their thoughts in a commercialized type format.

Lifestyle avatars, which are quite common and varied, depict some significant aspect of a person's life - usually something to do with occupation, hobby, or personal habit. It may be a way to attract like-minded individuals.

Matching avatars are designed to accompany each other and indicate the connection or bonding between the pair of members. Considerable imaginative and technical skills may go into creating such avatars.

Clan avatars - are worn by members of the same social group, some might even say "gang." These avs tend to be similar in basic design with slight variations to differentiate each one from the others. As such, each user announces his/her allegiance to the clan by adopting its collective visual appearance, while also maintaining some measure of individuality. It reminds me of the songs in some bird species. The species identifies itself and its members by a basic template that serves as the collective song. Yet each individual bird adds a small unique variation to that template in order to signify its individuality. Clan avs are found almost exclusively among adolescents for whom belonging to a peer group - and conforming to its standards - is a developmental hallmark.

Animated avatars contain motion, such as an eye tearing, a bird flying, or a flag waving. By visually diplaying "behavior" they can express a wide and subtle range of psychological meaning. Tapping a finger, blinking one's eyes, banging one's head against the wall - there are infinite expressive possibilties. The motion usually is cyclical and repetitious, which - depending on the type of avatar - may convey a feeling of persistance, determination, mindlessness, or rhythmic peacefulness.